Biome official
Frozen City
Buried ruins — the highest-value salvage and the highest risk.
Threats
- — Hostile factions in deep districts
- — Structural collapse inside ruins
- — Frostbite during long indoor scavenging runs
Salvage focus
- — Fragile pre-catastrophe technology
- — Generator parts
- — Advanced salvage
Traversal
Enter with a repair plan, not a looting plan — restored rooms double as warm checkpoints.
How Frozen City plays
Official copy describes "city ruins fading into wilderness" and a progression built on restoring abandoned shelters and repairing broken machines.
Ruins are where shelter restoration is cheapest: you repair an existing perimeter instead of building one from scratch.
Deeper districts are framed as faction-controlled, which is where the risk curve steepens.
What is still unmeasured here
Biome-specific numbers are not published and cannot be inferred. The following stay blank on this page until they can be measured in the demo or the launch build:
- Temperature band and how fast exposure accumulates in this biome
- Resource node density and respawn behaviour
- Enemy and wildlife spawn tables
- Loot table weights for the salvage listed above
That list is the point of this page. Every pre-launch Permafrost wiki has opinions about those four things and none of them have measurements.
Related systems
Other biomes
Data version 2026.09.24 · reviewed 24 September 2026.